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The 2005 Chevy Malibu has a thermostat located in the thermostat housing on the lower coolant line. The thermostat helps monitor the coolant temperature in the line, enabling it to gauge the engine temperature. If this component malfunctions, the engine may overheat, leading to potential damage. When the engine overheats, it can cause the head gasket to warp or crack, resulting in expensive repairs. If a check engine light indicates a faulty thermostat, it's crucial to address the issue promptly. A complete replacement costs around $200, so delaying repairs is not advisable.
The 2005 Chevrolet Malibu 2.2 L 4-cylinder model has its thermostat placed on the thermostat housing near the water pump feed pipe.